Olympiad Test: Number System -1 - Class 4 MCQ

• To find a number that is 1000 more than 69,090, you start with the original number.
• Then, simply add 1000 to it: 69,090 + 1000.
• This gives you 70,090.
• Among the options provided, 70,090 is the correct answer.
• Thus, the answer is option 1: 70,090.

To determine the place value of 6 in 28,650, we break down the number by its places.

• Starting from the right, each digit represents:
• Units
• Tens
• Hundreds
• Thousands

The digit 6 is in the hundreds place, so its value is:

6 × 100 = 600.

Therefore, the correct answer is A) 600.

The number is 96,008.

To form the greatest 4-digit number using the digits 2, 8, 3, and 7, follow these steps:

• Arrange the digits in descending order based on their place value.
• Start with the highest digit for the thousands place.
• Follow with the next highest digit for the hundreds place.
• Next, use the digit for the tens place.
• Finally, place the smallest digit in the units place.

This results in 8732 as the largest possible number.

The face value of 6 is 6 itself.

• Place Value Comparison: Start by comparing the leftmost digits. 68,316 has a '6' in the ten-thousands place, while 51,346 has a '5'.
• Determining the Larger Number: Since 6 is greater than 5, 68,316 is larger regardless of the remaining digits.
• Conclusion: Therefore, option 2, 68,316, is the greater number.

The numeral is 70,405.

To form the smallest number using the digits 4, 6, 2, and 3, follow these steps:

• Arrange the digits in ascending order.
• Start from the highest place value.
• The digits in ascending order are: 2, 3, 4, and 6.

By arranging these digits, we get the number 2346. Therefore, the correct answer is A.

The successor of a number is the next integer in sequence. Therefore:

• Adding one to 93,612 gives us 93,613 as the correct successor.